Concrete Grades: Types And Usage
Strength and composition of the concrete defined the grades of concrete. The minimum strength should follow 28 days of initial construction. The measurement to understand the grade of concrete is MPa. Here M stands for mix and an MPa shows the overall strength.
Concrete mixer is defined in ascending order of 5. It starts at 10. The compressive strength of concrete shows after 28 days. C10 has the strength of 10 newtons, C15 has the strength of 15 newtons, C20 has 20 newtons strength.
M comes in different mix proportions of various ingredients of cement, sand and coarse aggregates. M20 comes in the respective ratio of 1:1:5:3.